ci: fix upload_container job

Author: chubnastia

.gitlab-ci.yml

@@ -401,6 +401,7 @@ upload_container:
     - mkdir maven
     - tar -C maven --strip-components=1 -xzvf packages/tar/target/dcache-*.tar.gz
     - cp $CI_PROJECT_DIR/packages/tar/src/main/container/* .
+    - mkdir -p staging-libs
     - mkdir -p /kaniko/.docker
     - echo "{\"auths\":{\"https://index.docker.io/v1/\":{\"username\":\"$DOCKER_HUB_USER\",\"password\":\"$DOCKER_HUB_ACCESS_KEY\"}}}" > /kaniko/.docker/config.json
     - >